Report: U.S. Carriers’ On-Time Arrival Rates Increased in August

U.S. airlines posted an on-time arrival rate of 79.1 percent in August, a more than 3 percentage point increase from the 76 percent mark posted in July, according to the U.S. Department of Transportation (DoT).

In its latest Air Travel Consumer Report, the DoT said U.S. carriers posted no tarmac delays of more than three hours on domestic flights in August, and one tarmac delay of more than four hours on international flights.

DoT said the leading causes of the delays were due to aviation system delays and late-arriving aircraft. In August, the carriers filing on-time performance data reported 5.26 percent of their flights were delayed by aviation system delays, compared to 6.07 percent in July; 7.68 percent by late-arriving aircraft, compared to 9.03 percent in July.